Results 51 to 60 of about 808 (102)
Gaoya dianqi, 1975 在第一讲中我们已经提到:熄灭电弧是断路器最艰巨的任务之一,和其它开关电器相比,断路器的特殊性突出地表现在它的灭弧装置上,甚至断路器本身的分类最主要也是按灭弧装置的类型来划分的。前面几讲介绍过的导电、绝缘、操动,在一定意义上来说,是为灭弧服务的。断路器的灭弧装置不同,它的导电、绝缘、操动系统的结构及断路器的性能都可能因之而异。所以 ...
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Gaoya dianqi, 2017 换流站交流滤波器断路器因切断频繁等因素发生了多起爆炸事故,威胁了电网运行安全。分析表明交流滤波器断路器合闸涌流对弧触头烧蚀产生的金属微粒,可能会引起灭弧室电场畸变进而降低设备绝缘强度,为此文中开展了金属微粒对交流滤波器断路器灭弧室电场分布的仿真研究。首先基于电磁场数值分析理论,采用Solidworks和Ansys软件建立了550 kV ACF断路器和不同形状金属微粒的三维数值仿真模型,并仿真分析了无金属微粒情况下ACF断路器开断过程中的电场分布;然后,研究了金属微粒形状和半径对灭弧室电场分布的影响 ...
王程嘉 +6 more
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[Therapeutic effects of sacral neuromodulation on detrusor underactivity]. [PDF]
Beijing Da Xue Xue Bao Yi Xue Ban, 2021 Wang Q +7 more
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[Application of three-dimensional printed porous titanium alloy cage and poly-ether-ether-ketone cage in posterior lumbar interbody fusion]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi, 2022 Wang Y, Zhou Y, Chai X, Zhuo H.
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Gaoya dianqi, 1996 当真空灭弧室（特别是玻璃真空灭弧室）受到横向作用力时,其中封部位最易损坏。以玻璃真空灭弧室为例,对其受到横向力及承受横向振动或冲击时中封部位的受力情况进行了分析和计算,其结果可用以指导灭弧室中封强度试验及考柱规范的确定。
倪世龙
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[Research progress in repair and reconstruction of tumor-related bone defects in proximal femur]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiTan L +9 more
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A case of echinococcosis in Hunan Province. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Li J, Deng S, Jiang L.
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[Bacteriophage Therapy: Retrospective Review and Future Prospects]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue Ban, 2021 Tian EK, Wang Y, Wu ZX, Wan ZQ, Cheng W.
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[Several issues that need attention to improve the diagnosis and treatment level of infectious wounds]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiLiu Y.
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